The Trane VAL07559 5-Ton Thermostatic Expansion Valve is a replacement metering component designed for compatible Trane HVAC and refrigeration systems. It regulates refrigerant flow into the evaporator by responding to superheat levels, helping maintain proper refrigerant balance and efficient heat transfer. Designed for systems with a 5-ton capacity, this valve is used in compatible ... https://www.partshnc.com/trane-val07559-5-ton-thermostatic-expansion-valve-31-ods-x-chatleff